The PSC RF SR 4 Slot Rack contains built in low noise, high current RF amplifiers and distribution circuitry. The 4-way, active RF splitters will feed high quality RF to your four slot receivers. This rugged device was developed using the latest super low noise RF amplifiers and is offered in several models that operate over multiple frequency ranges. Its two RF inputs are traditional BNC connectors for ease of use in interfacing with your external antennas. Each of the four slots offers a typical Rf signal isolation factor of 24 to 28dB between radio receivers. The PSC RF SR 4 Rack also has the ability to power external powered antennas or remote line amplifiers. There are two front panel mounted switches on the unit. One is marked “MAIN POWER” and this controls the overall power to the unit. The second switch is marked “ANT PWR” and this switch controls the power being sent to an external powered antenna or remote line amplifier. Both switches are accompanied by panel mount LEDs for easy to view operation. The entire unit is powered from any source of external DC power of 12Vdc @ approximately 185mA through the rear panel mounted 4 pin XLR power connection. The unit can also be powered from 90 to 240VAC for fixed installations. On the rear of the unit there are eight TA3M mini XLR output connectors. These provide audio output from the four slot receivers as well as DB-25 connector that offers all the audio outputs on one convenient “audio snake connector”. This DB25 Connector is wired to the industry standard “Tascam” wiring standards.